Table 3.

Comparison of head tile angles, techniques, planning systems, and OARs.

	head tilt angle	technique	planning system	OARs
Ref[Moon]	30°	IMRT vs VMAT	eclipse	hippocampi, eyes, lens, cochlea
Ref[Se]	40°	VMAT	eclipse	hippocampi, left lens, right lens, both parotid glands
Ref[Lin]	0°-40°	VMAT	eclipse	hippocampi, left lens, right lens
Ref[Miura]	26°-49°	TOMO	TOMO	hippocampi, lens
Ref[Chung]	45°	TOMO	TOMO	hippocampi, eyes, brainstem, optic chiasm, right optic nerves, left optic nerves, normal Brain
Our study	0°-45°	VMAT	Pinnacle	hippocampi, eyes, lens, cochlea, brainstem, optic chiasm, optic nerves, pituitary